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单项选择题
A．Checks all books for missing pages.B．Helps students use the card catalog.C．Demagnetizes the books as they are checked out.D．Copies down the name and the address of each borrower.
A．Checks all books for missing pages.
B．Helps students use the card catalog.
C．Demagnetizes the books as they are checked out.
D．Copies down the name and the address of each borrower.
单项选择题
A．One.B．Two.C．Three.D．Four.
A．One.
B．Two.
C．Three.
D．Four.
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